A couple, Otsu and Ama, won a trip in a raffle held by their local community association in a certain prefecture in Tohoku. This journey promises nostalgic memories of Michinoku and a stay at a rustic guesthouse surrounded by nature. The area is known as the birthplace of an ancient local tradition called "night crawling," a secretive custom in which a man stealthily visits a woman late at night to quietly engage in intimacy. Though this practice has nearly vanished today, it reportedly continued in this region until relatively recently. Immersed in the local atmosphere and heartfelt hospitality, the couple begins seeking new experiences. As they connect with the region's culture and history, their relationship takes an unexpected turn.